Won't Stitch different Bit Rate mp3 files. An application like this is needed. I use "Stitch" which is bundles with Sound Studio - but it has some limitations too. When the developer allows multi-bit rate files to be stitched and also both stereo and mono files together - a user selectable output for mono or stereo, and a fade option between files - then this will be very useful and a 4- 5 star.....